Asda only has it in 500ml and 1l containers. I couldn't be arsed walking to Tesco, and the nearest Morrisons or Sainsburys is a 20-minute drive away.
The dairy that delivers here does 500ml, 1l, and 2l, as does the one I bought milk from before I moved, and the one before I moved the time before that.
The dairy that delivers here does 500ml, 1l, and 2l, as does the one I bought milk from before I moved, and the one before I moved the time before that.